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From 6c004c6c8b8f98f56e186740881520b8364e6f85 Mon Sep 17 00:00:00 2001
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From: Atin Mukherjee <amukherj@redhat.com>
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Date: Mon, 18 Mar 2019 16:08:04 +0530
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Subject: [PATCH 45/52] glusterd: fix txn-id mem leak
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This commit ensures the following:
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1. Don't send commit op request to the remote nodes when gluster v
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status all is executed as for the status all transaction the local
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commit gets the name of the volumes and remote commit ops are
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technically a no-op. So no need for additional rpc requests.
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2. In op state machine flow, if the transaction is in staged state and
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op_info.skip_locking is true, then no need to set the txn id in the
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priv->glusterd_txn_opinfo dictionary which never gets freed.
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> Fixes: bz#1691164
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> Change-Id: Ib6a9300ea29633f501abac2ba53fb72ff648c822
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> Signed-off-by: Atin Mukherjee <amukherj@redhat.com>
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upstream patch: https://review.gluster.org/#/c/glusterfs/+/22388/
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BUG: 1670415
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Change-Id: Ib6a9300ea29633f501abac2ba53fb72ff648c822
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Signed-off-by: Sanju Rakonde <srakonde@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/166449
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
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---
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 xlators/mgmt/glusterd/src/glusterd-op-sm.c  | 26 ++++++++++++++++++++------
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 xlators/mgmt/glusterd/src/glusterd-syncop.c | 16 ++++++++++++++++
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 2 files changed, 36 insertions(+), 6 deletions(-)
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diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.c b/xlators/mgmt/glusterd/src/glusterd-op-sm.c
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index cbbb5d9..12d857a 100644
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--- a/xlators/mgmt/glusterd/src/glusterd-op-sm.c
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+++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.c
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@@ -5652,6 +5652,9 @@ glusterd_op_ac_stage_op(glusterd_op_sm_event_t *event, void *ctx)
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     dict_t *dict = NULL;
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     xlator_t *this = NULL;
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     uuid_t *txn_id = NULL;
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+    glusterd_op_info_t txn_op_info = {
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+        {0},
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+    };
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     this = THIS;
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     GF_ASSERT(this);
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@@ -5686,6 +5689,7 @@ glusterd_op_ac_stage_op(glusterd_op_sm_event_t *event, void *ctx)
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         ret = -1;
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         goto out;
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     }
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+    ret = glusterd_get_txn_opinfo(&event->txn_id, &txn_op_info);
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     ret = dict_set_bin(rsp_dict, "transaction_id", txn_id, sizeof(*txn_id));
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     if (ret) {
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@@ -5704,6 +5708,12 @@ out:
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     gf_msg_debug(this->name, 0, "Returning with %d", ret);
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+    /* for no volname transactions, the txn_opinfo needs to be cleaned up
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+     * as there's no unlock event triggered
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+     */
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+    if (txn_op_info.skip_locking)
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+        ret = glusterd_clear_txn_opinfo(txn_id);
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+
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     if (rsp_dict)
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         dict_unref(rsp_dict);
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@@ -8159,12 +8169,16 @@ glusterd_op_sm()
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                            "Unable to clear "
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                            "transaction's opinfo");
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             } else {
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-                ret = glusterd_set_txn_opinfo(&event->txn_id, &opinfo);
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-                if (ret)
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-                    gf_msg(this->name, GF_LOG_ERROR, 0,
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-                           GD_MSG_TRANS_OPINFO_SET_FAIL,
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-                           "Unable to set "
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-                           "transaction's opinfo");
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+                if (!(event_type == GD_OP_EVENT_STAGE_OP &&
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+                      opinfo.state.state == GD_OP_STATE_STAGED &&
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+                      opinfo.skip_locking)) {
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+                    ret = glusterd_set_txn_opinfo(&event->txn_id, &opinfo);
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+                    if (ret)
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+                        gf_msg(this->name, GF_LOG_ERROR, 0,
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+                               GD_MSG_TRANS_OPINFO_SET_FAIL,
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+                               "Unable to set "
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+                               "transaction's opinfo");
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+                }
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             }
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             glusterd_destroy_op_event_ctx(event);
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diff --git a/xlators/mgmt/glusterd/src/glusterd-syncop.c b/xlators/mgmt/glusterd/src/glusterd-syncop.c
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index 1741cf8..618d8bc 100644
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--- a/xlators/mgmt/glusterd/src/glusterd-syncop.c
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+++ b/xlators/mgmt/glusterd/src/glusterd-syncop.c
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@@ -1392,6 +1392,8 @@ gd_commit_op_phase(glusterd_op_t op, dict_t *op_ctx, dict_t *req_dict,
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     char *errstr = NULL;
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     struct syncargs args = {0};
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     int type = GF_QUOTA_OPTION_TYPE_NONE;
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+    uint32_t cmd = 0;
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+    gf_boolean_t origin_glusterd = _gf_false;
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     this = THIS;
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     GF_ASSERT(this);
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@@ -1449,6 +1451,20 @@ commit_done:
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     gd_syncargs_init(&args, op_ctx);
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     synctask_barrier_init((&args));
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     peer_cnt = 0;
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+    origin_glusterd = is_origin_glusterd(req_dict);
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+
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+    if (op == GD_OP_STATUS_VOLUME) {
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+        ret = dict_get_uint32(req_dict, "cmd", &cmd);
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+        if (ret)
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+            goto out;
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+
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+        if (origin_glusterd) {
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+            if ((cmd & GF_CLI_STATUS_ALL)) {
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+                ret = 0;
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+                goto out;
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+            }
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+        }
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+    }
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     RCU_READ_LOCK;
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     cds_list_for_each_entry_rcu(peerinfo, &conf->peers, uuid_list)
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-- 
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1.8.3.1
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